Here's what other sites are saying:
The PacSafe 55 provides complete security for your backpack. Stainless steel construction is slash proof and deters theft, pilfering, and tampering. Can be locked to stationary object with included padlock. Folds compactly into included storage pouch. Fits small backpacks from 1550 -3400 cu.in. Weight: 1.1lbs. Folds to 5.5x3.5x2 in.
- Altrec Outdoors